Specimen identification techniques employing non-linear functions of autocorrelation functions



July 20, 1965 P. HORWITZ ETAL. 3,196,394

SPECIMEN IDENTIFICATION TECHNIQUES EMPLOYING NON-LINEAR FUNCTIONS OF AUTOCORRELATION FUNCTIONS Filed March 5. 1961 24 Sheets-Sheet 1 MAXIMUM SKGNAL INDICATQR a: U) w (1) U) u U3 U? U) REFERENCE STORAGE RESISTDR HATRiX I i=1 6 I 9 z: 3 Li l w k s E: E: 35 5; $5 5% 5 E 5 5 E f I r2 :2 '2

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'SECOND' DIFFERENCE OPERATOR a g 2 z z AUTOCQRREL ATION FUNCTION GENERATOR INVENTORS LAWRENCE P. HORWITZ GLENHORE LSHELTOHJR NEY July 20, 1965 L. P. HoRwn'z ETAL 3,195,394

SPECIMEN IDENTIFICATION TECHNIQUES EMPLOYING NQN-LINEAR FUNCTIONS OF AUTOCDRRELATION FUNCTIONS Filed March 3. 1961 24 Sheets-Sheet 2 AUTOCORRELATIQN FUNCTKON July 20, 1965 L. P. HoRwn'z ETAL SPECIMEN IDENTIFICATION TECHNIQUES EMPLOYING NON-LINEAR FUNCTIONS OF AUTOCORRELATION FUNCTIONS Filed March 3. 1961 24 Sheets-Sheet 4 II II III II II I I I II I I I I I- I I I- on. I I- I I II I I I I I- II I- I- I 02.

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SPECIMEN IDENTIFICATION TECHNIQUES EMPLOYING NON-LINEAR FUNCTIONS OF AUTOCORRELATION FUNCTIONS Filed March 3. 1961 24 Sheets-Sheet 6 T T c 2 .v .5 2052: 22235822 5 2255:

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SPECIMEN IDENTIFICATION TECHNIQUES EMPLOYING NON-LINEAR lseffNCTIONS 0F AUTOCORRELATION FUNCTIONS 24 Sheets-Sheet 8 Filed March 3.

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July 20, 1965 L. P. HORWITZ ETAL 3,196,394 SPECIMEN IDENTIFICATION TECHNIQUES EMPLOYING Non-mama,

FUNCTIONS OF AUTOCORRELATION FUNCTIONS 24 Shets-Sheet 9 Filed March 3. 1961 0 0000000 000000000 0 0 000 00.00.0000 0 0 0.0 0.00 000 0 000 0 00 I. O 00 0 O U .00 I... 0 000 0 900 0 .00 i .0 0 I00 0o. 00 O Q... 000 000000000 0 0000000.... 00 0 0 00.00 0:. 000 0 000 0 0 0 0000 0 00 0 000 0 a 0000 0 00 o 0 0 000 0 on. 0 O O .0. .00 O. O... I I 0 00 00000 000 0 0 0000000000000 0 0 00000000000 0 0 0 00 0 0O .0 00 00 0 0 0 0 I 0 0 0 0 0 0 0 0. I 0 0 0 0 0 0 0 I O O. O 0 00 0 0 0 00 0 0 0000 OQQQG. 00.000000000000 000 on... 0 e 0 00000. no 0 one o o no on o o a on 00 0 o 0 on o 00 00.0.. no 0 on 00 000 o o 00000 0 o 000 u o a o o 0o 00 0. 00 o o o a o 0 0 0 0 0 o 0 on o a o o a o o 0 a a no 0 o on o o y 0, 1965 L. P. HORWITZ ETAL 3 196394 SPECIMEN IDENTIF'ICATI LQYING NON-LI NEAR UNCTIONS OF A NCTIONS ON TECHNIQUES EMF F uroconn 1961 ELATION FU 24 Sheets-Sheet 10 Filed March 3.

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SPECIMEN IDENTIFICATION TECHNIQUES EMPLQYING NON-LINEAR FUNCTIONS OF AUTOCORRELATION FUNCTIONS Filed March 3. 1961 F|G.15 I FIGJG FIGJ? S i a DELAY-f R O FLIP-FLOP "AND" GATE DELAY cl'Rcurr *1 FIG. 18-

I F F l lsmFT REGlSTER 8 8: 8 A 8 8:. a L SHIFT 1 T I 1 I O l 0 4 O l 0 i S R S R S R S R I '!& .1 J T J RESET 4 FIG.19 P16. 20 AMPLIFIER INTEGRATOR FIG. 21

M l- NON'UNEAR INPUT I VIBRATOR VIBRATOR l v J 24 Sheis-Sheet 12 July 20, 1965 L. P. HoRwn'z ETAL SPECIMEN IDENTIFICATION TECHNIQUES EMPLOYING NON-LINEAR FUNCTIONS OF AUTOCORRELATION FUNCTIONS Filed March 3. 1961 24 Sheets-Sheet 13 9 R 0., A w E m v NW 0, m m C 0 H N w mm N mm a V 1 2 2 5 N 9 1 2 ,E On A Gm HUR NE N "U 5". 4

1d 2 R A0 u G 9 2 M m R R 0 0 "N 5 W ET UF. E A WA 6 S a On R 1 .L -FrL E U G m m? P 0 0 0 W M M F 2 a 2 S T nu; 5 20 FIG.

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July 20, 1965 L. P. HORWITZ ETAL. 3,195,394

SPECIMEN IDENTIFICATION TECHNIQUES EMPLOYING NON-LINEAR FUNCTIONS OF AUTQCORRELATION FUNCTIQNS Filed Harsh 3. 1961 24 Sheets-Shee t 14 FIG. 22 b L. P. HORWSTZ ETAL July 20, 1965 3,196,394

SPECIMEN IDENTIFICATION TECHNIQUES EMPLOYING NON-LINEAR FUNCTIONS OF AUTOGORRELATION FUNCTIONS 24 Sheets-Sheet 15 Filed March 3. 1961 FIG. 22c

Ju y 1965 L. P. HORWITZ ETAL 3,196,394

SPECIMEN IDENTIFICATION TECHNIQUES EMPLOYING NON-LINEAR FUNCTIONS OF AUTQCORRELATIQN FUNCTIONS Filed March 3, 1981 24 Sheets-Sheet l7 F|s. 22a

July 20, 1965 1.. P. HORWITZ ETAL 3,195,394

SPECIMEN IDENTIFICATION TECHNIQUES EMPLDYING' NON-LINEAR FUNCTIONS OF AUTOCORRELATION FUNCTIONS Filed March 3. 1961 24 Sheets-Sheet 18 FIG. 22f

j 201 i 201 l f 201 4 I 9 I a M223 & 223 a .123

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' SPECIMEN IDENTIFICATION TECHNIQUES EMPLQYING NON-LINEAR FUNCTIONS OF AUTQCORRELATIQN FUNCTIONS Filed March 3. 1961 24 Sheets-Shee't 19 FIG. 22g

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mm) mm) om.) om) July 20, 1965 L. P. HORWITZ ETAL 3,196,394

SPECIMEN IDENTIFICATION TECHNIQUES EMPLOYING NON-LINEAR FUNCTIONS OF AUTOCORRELATIQN FUNCTIONS Filed March 3. 1961 24 Sheets-Sheet 20 1 Ir 9 L 0 -1,-4) D(0,-4) D(1,-4) 0m) M014) 001,4) 

1. A SPECIMEN IDENTIFICATION APPARATUS COMPRISING, IN COMBINATION MEANS FOR GENERATING A NON-LINEAR FUNCTION OF AN AUTOCORRELATION FUNCTION OF SPECIMEN DATA LOCATED THROUGHOUT THE SPECIMEN, AND MEANS FOR COMPARING SAID FUNCTION WITH NON-LINEAR FUNCTIONS OF AUTOCORRELATION FUNCTIONS OF REFERENCE PATTERNS, FOR IDENTIFYING THE SPECIMEN. 